... 1)co-extrusion:LLDPE/EVOH/PA/LLDPE. 2)3or7 layer extrusion lamination. 3)barrier to oxygen gas/moisture/oil 4)OEM service high ... quality co-extrusion lamination packaging film3 layer and 7 layer co ... ,CPP,BOPP ,BOPA,PVDC-FILM,PET,VMPET,VMCPP single-layer and multilayer lamination material high barrable high strength,especially excellent ...